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Old 12-15-2011, 11:03 PM   #13
Registered User
Join Date: Dec 2011
Location: San Francisco
Posts: 1
My Ride: 2001 BMW 330Ci Conv
P0171 and P0174 after VCG change

Great writeup! I just did this replacement today as mine was leaking oil like crazy (also had to replace oil level sender and do an oil change, but that's unrelated!).

Car drives fine - but after a 45 minute drive on the freeway the SES light came on with codes P0171 and P0174.... something about it running lean. I cleaned off the head and valve cover well before placing them on, used a small amount of RTV as indicated, and tightened the nuts well. Any thoughts as to why this is coming up? Car seems to be running fine!
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